Polymarket 5-Minute Up/Down Bot (Rust)

Automated Rust bot that trades Polymarket’s 5‑minute “Up or Down” markets (Bitcoin, Ethereum, Solana) via the CLOB REST API.

It:

• Connects with your Polymarket wallet (EOA + Gnosis Safe proxy)
• Finds active 5m Up/Down markets for BTC, ETH, and/or SOL (configurable)
• Places one BUY per outcome (Up and Down) per market when price conditions are met
• Tracks fills and places a SELL when price ≥ sell target, or stop-loss when price ≤ 67% of target
• Sells at current bid when it’s ≥ sell price; otherwise places limit at sell price
• Emergency exit near market close to avoid holding into resolution

Prerequisites

• Rust 1.70+ (rustup recommended)
• A Polymarket account funded with USDC on Polygon and enabled for trading

Build

cd arcane-build/polymarket-bot-rust
cargo build --release

Configure

Copy the env template and set your credentials:

cp env.template .env
# Edit .env with your PRIVATE_KEY and optional FUNDER_ADDRESS

Example .env:

PRIVATE_KEY=0x...         # EOA private key that controls your Polymarket account
CLOB_HOST=https://clob.polymarket.com
CHAIN_ID=137
GAMMA_HOST=https://gamma-api.polymarket.com

# Which 5m Up/Down markets to trade: btc, eth, sol (comma-separated; default: btc)
TRADE_MARKETS=btc,eth,sol

TARGET_PRICE_UP=0.45
SELL_PRICE_UP=0.55
TARGET_PRICE_DOWN=0.45
SELL_PRICE_DOWN=0.55
ORDER_AMOUNT_TOKEN=5
CHECK_INTERVAL=10000
SELL_DELAY_MS=10000

TRADING_MODE=continuous
# TRADING_MODE=once

# Optional: Gnosis Safe proxy (funder) for signatureType=2
FUNDER_ADDRESS=0xYourSafeProxyAddress
# Optional: log file
# LOG_FILE=logs/trading.log

• PRIVATE_KEY: EOA you use with Polymarket (e.g. MetaMask).
• FUNDER_ADDRESS: Your Polymarket Safe proxy address (recommended for CLOB signatureType=2). Omit to use the EOA as funder.
• ORDER_AMOUNT_TOKEN: Shares per side; minimum 5. USD per side ≈ ORDER_AMOUNT_TOKEN × TARGET_PRICE_*.
• Stop loss: Fixed at 67% of the buy (target) price for both Up and Down.

Run

cargo run --release
# or
./target/release/polymarket-bot

Stop with Ctrl+C.

Behavior

• One market at a time: Only the next eligible 5m window across your chosen assets is traded (single slot).
• Choose assets: Set TRADE_MARKETS=btc, btc,eth, btc,eth,sol, etc. to trade Bitcoin, Ethereum, and/or Solana 5m Up/Down.
• One BUY per outcome per market: At most one Up and one Down per market duration; no re-buy after sell.
• Sell when:
  • Price ≥ configured sell price (take-profit), or
  • Price ≤ stop-loss (67% of target).
• Emergency exit: When close to market end, resting SELLs are cancelled and an aggressive exit is placed so you don’t hold into resolution.

Project layout

• src/main.rs – Entry point, config load, bot run.
• src/config.rs – Env-based configuration and validation.
• src/types.rs – Market, order, and outcome types.
• src/logger.rs – Console and optional file / per-market logging.
• src/gamma.rs – Gamma API client for BTC 5m markets.
• src/clob.rs – CLOB client: EIP-712 auth (derive API key), HMAC L2, limit orders, balance, open orders, cancel.
• src/bot.rs – Main loop: discovery, enter market, fill detection, SELL placement, stop-loss, emergency exit.

References

• Polymarket CLOB
• Polymarket API Reference